Home / 2,875.19-4,312.78-900.97

Finding the Fourth Proportional to 2,875.19, 4,312.78 and 900.97

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Solution

The fourth proportional to 2,875.19, 4,312.78 and 900.97 is: 1,351.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.19 : 4,312.78 = 900.97 : x
  2. Step 2: Convert to fraction form
    2,875.19/4,312.78 = 900.97/x
  3. Step 3: Cross multiply
    2,875.19x = 4,312.78 × 900.97
  4. Step 4: Simplify right side
    2,875.19x = 3,885,699.56
  5. Step 5: Solve for x
    x = 3,885,699.56/2,875.19
  6. Step 6: Final answer
    x = 1,351.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.